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A medium Python mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Python
- Difficulty
- medium
- Seniority
- L4
Interview Prompt
You're auditing login records from a retention dashboard, where each entry in `activities` carries a `user_id` and a `date` string in 'YYYY-MM-DD' form. Return the `user_id`s who were active across at least `min_streak` back-to-back calendar days.
Summary
Show up every day. Miss one and the count starts over.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your python solution with real code execution
- Get instant feedback and a hire/no-hire decision